[128] The nearest approach I have met with to a suggestion of a wish to inflict pain in this early practical joking is the following: The child M. when two years old stood on her mother’s foot saying, “Oh, my poor toe!” But it seems reasonable to say that in such moments of frolic pain is quite unrepresentable.
[129] Op. cit., p. 196. I have heard of it occurring in a girl at the age of three and a half. The point should certainly be determined by more precise observations.
[130] Preyer first observed roguish laughter at the end of the second year (op. cit., p. 196). He does not define the expression “schelmisches Lachen”.
[131] Compare above, p. 83.
[132] See Mrs. Hogan’s Study of a Child, p. 18.
[133] Cf. what was said in chap. v., p. 142, apropos of Leigh Hunt’s theory.
[134] Ruth’s laughter at the mother’s face was certainly very early.
[135] Hogan, op. cit., p. 71.
[136] See my Studies of Childhood, pp. 274–5.
[137] Most of the observations here quoted, on the laughter of the boy C., have appeared before in a chapter of my volume, Studies of Childhood. The reader who is familiar with this chapter will, I feel sure, pardon the repetition.